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Finding the Fourth Proportional to 65,722.61, 98,600.32 and 18,975.49

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Solution

The fourth proportional to 65,722.61, 98,600.32 and 18,975.49 is: 28,467.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,722.61 : 98,600.32 = 18,975.49 : x
  2. Step 2: Convert to fraction form
    65,722.61/98,600.32 = 18,975.49/x
  3. Step 3: Cross multiply
    65,722.61x = 98,600.32 × 18,975.49
  4. Step 4: Simplify right side
    65,722.61x = 1,870,989,386.16
  5. Step 5: Solve for x
    x = 1,870,989,386.16/65,722.61
  6. Step 6: Final answer
    x = 28,467.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.